This is a colorless streak that occurs when urine dries on the test strip. Disregard this evap line if it appears; it doesn't mean you're pregnant. The evaporation line can appear for a number of ...

Since the COVID-19 pandemic, pretty much everybody is familiar with this technology: paper-based rapid test strips, also called lateral flow immunoassays (LFIAs). They enable easy detection of ...

Hoosiers using test strips to detect the presence of fentanyl or other controlled substances soon no longer will be subject to possible arrest on drug paraphernalia charges. The Indiana Senate ...